<template>
<div>
  <button @click="fn(3000)">发工资啦,我的工资是3000</button>
  <button @click="fn(-2800)">给喜欢的女主播刷了火箭-2800</button>
  <button @click="fn(10000)">送外卖赚了10000</button>
  <button @click="fn(-18000)">给暗恋的女生买了爱马仕-18000</button>
  <button @click="fn(8000)">晚上去做代驾赚了8000</button>
  <button @click="fn(-100)">买泡面100</button>
  <button @click="fn(-50)">买挂逼水50</button>
  <p>我还有{{num}}元</p>
</div>
  
</template>

<script>

export default {
  data(){
    return{
      num:0
    }
  },
  methods:{
    fn(e){
      this.num += e
    }
  }
}
</script>

<style>

</style>
